Holder for concrete inserts



Nov. 6 1923.

w. E. WHITE HOLDER FOR CONCRETE INSERTS Filed Feb. 16; 1921 W i I n]wlum atented Nov. 6-, 1923.

"r reins.

WILLIAM E. WHITE, OF CHICAGO, ILLINOIS.

HOLDER FOR CONCRETE INSERTS.

Application filed February 16, 1921.

To all whom it may concern.-

Be it known that I, IVILLIAM E. WHITE, a citizen of the United States,and resident of Chicago, in the county of Cook and State of 6 Illinois,have invented certain new and useful Improvements in Holders forConcrete Inserts, of which the following is a specification.

My invention relates to concrete accessories and particularly to a novelinsert and means for retaining the same in position prior to the pouringof the concrete.

In many types of buildings it is desired to cast a suitable device inthe concrete whereby hangers, conduits, etc., may suspend from a ceilingand so-called inserts are employed for that purpose. These usuallycomprise a box-like structure having an open slot in the lower end, oneportion of the slot being wider than the remaining portion. It is,however, necessary to provide suitable means for securing the insert inthe desired position on the form prior tothe pouring of the concrete andto that end it is not unusual to provide means for nailing the box tothe wooden forms. This is objectionable, however, for the reason thatwhen the forms are stripped the fastening nails project from thefinished concrete, thus requiring an extra operation in clipping ofljthe nails. This is an objectionable and more or less expensive practicewhich is avoided by the structure here proposed.

One of the objects of this invention is to provide a simple resilientstrip having a portion adapted to enter the keyhole slot in the bottomof an insert and be thereafter moved to a relatively permanent position,thus firmly holding the insert with no projecting fastening elements.When the forms are stripped the nails will be withdrawn and the holdingclip may readily be disengaged; in

fact, it may be removed with the boards of the form. It will be of sucheconomical construction thatit is not intended for reuse.

The invention will be more readily understood by reference to theaccompanying drawings, wherein,

Fig. l is a longitudinal sectional view through an insert secured to aform by the device of my invention;

Fig. 2 is a sectional view on the line 22 of Fig. 1;

the length of the box.

Serial No. 445,315.

Fig. 3 is a horizontal sectional view on the line 3-3 of Fig. 1; and

Fig. 4 is a perspective view of the fastening clip.

In the drawings it will be seen that I have illustrated an insert of aform such as shown in my co-pending application Serial No. 145,314,filed of even date herewith, but the device of my invention will operatewith equal facility with any of the well known forms of inserts havingan open slot in its lower wall, one portion of the slot being wider thananother portion. In the insert illustrated there is a box having sidewalls 10 and end walls 11, the slot 12 being widened at 13 to permit theinsertion of a bolt head of standard form. The metal adjacent to theslot 12 provides flanges 14, on which the bolt head will rest when inposition. The flanges 15, of less width than the flanges 14, partiallysurround the enlarged opening 1.3. The flanges 15 are intended tosupport a keeper 16 which, when in its lowered posi tion, acts tosupport and give freedom of longitudinal movement 01 a bolt throughoutHowever, the keeper has no function in connection with the retainingdevice which forms the subject-matter of this invention; and, in fact,it will be, in practice, retained in a fixed elevated posi tion, such asshown. in Figs. 1 and 2, by means of a suitable wire key 17 prior to thetime when a bolt is to be inserted in the in sert. At that time the wirekey is withdrawn and the keeper permitted to drop until it rests uponthe flanges 15.

The retaining device, as best shown in Fig. 4, comprises foot 18, havingopenings through which nails 19 or other fastening devices be insertedfor securing the device in a desired designated position on a form. Theretainer also includes a U-shaped portion comprising inclined members20, the latter, as shown in Fig. 1, being free from attachment to theform. and an intermediate curved portion 21 having side flanges or ears22 of a width greater than the width of the slot 12. The length of theinclined members 20 is so proportioned as to bring the center of thecurved portion 21 below the level of the flanges 14, thus necessitatinga slight bending of the overhanging. or free resilient portion of theretainer in order to assemble the insert therewith. The 1 length of thefoot portion 18 is also 'proportioned so that it may be received withinthe enlarged portion 13 of the slot when the resilient portion of theretainer has been suitably repositioned on the flanges 14.

In operation, after the retaining device has been secured in position,an insert 'is caused to co-operate therewith by inserting to a point atwhich the end, wall 28 of the foot snaps into the position shown inFig.1'. When in this position the insert cannot be moved Without distortingthe retainer. or

cull-ing the nails which secure it .to the form. he insert is,therefore, certain to remain in .the desired position during subsequentoperations. When theconcrete has set. and

[the forms are stripped, the retaining device may be distortedand'withdraivn, .or the nails may be pulled out, in which case theretainer may readily be removeduwith the fingers leaving a clean job andavoiding the necessity for cutting any projecting nails.

For all practical purposes the down-turned free end 20 might beeliminated so far as its-function in connection with the retainingelement is concerned. It is useful, however, to prevent distortion anddamage of the retaining device after ithas been located in position andbefore an insert hasbeen placed thereover. The device is so constructedthatthe weight of person' -applied to the top of the retainer will notcause any. damage thereto.

Obviously the construction is capable of much modification and I do notwish'to be limited except as indicated in the appended claims.

I: claim; V '1. A retaining device adapted for cooperation with a hollowinsert having a key-hole slot, the narrow portion of which slot isprovided with inwardly projecting flanges,

said retaining device having a portion for attachment to a form, and aresilient free movement to portion shaped to enter the wide portion ofthe insert slot and by lateral movement to overlie said flanges. v

8. A retaining device for. hollow inserts having internal flanges, saidinserts being provided with an open slot which is enlarsged at oneportion ior the insertion of-a bolt head, said insert comprising a stripof resilient sheetmetal bent to provide a foot adapted tobe secured to aform,:and an upstanding portion having curved ears adapted to rest uponthe flanges adjacent to the narrow portion of said slot.

l. A'resilient retainer for hollow inserts having internal flangescomprising a strip of metal 701T such size as to adapt it to becompletely coveredby an insert, said strip of metal :bent .to provide aflat'portion adapted to :be secured to a form, and a U-shaped projectionextending therefrom, the base of the U being provided with lateralextensions adapted to co-operate with the flangeson an insert. V

5. A resilient retainer for hollow inserts having internal flangescomprising a strip of-metal of such size as toadapt itto be completelycovered .by an insert-, said strip of metal bent to provide a flatportion adapted to be secured to a form, said flat 1 portion having aresilient projection extending vertically and then horizontally, thehorizontal portion having lateral extensions insert.

Signed at Chicago, -Ill., this 4th day of February, 1921. I

WILLIAM E. WHITE.

adapted to slide along the flanges of said

